Support such as centering, shuttering, scaffolding, and the like



July 25, 1939. R. F. BARTLETT SUPPORT SUCH AS CENTERING, SHUTTERING,SCAFFOLDING, AND THE LIKE 3 Sheets-Sheet 1 Filed Nov. 27, 1937 July 251939. BARTLETT 2,167,413

SUPPORT SUCH AS GENTERING, SHUTTERING, SCAFFOLDING, AND THE LIKE FiledNov. 27, 1937 5 Sheets-Sheet 2 A. A A

27 I E\ zrfi wxwgwgmw July 25, 1939. R BARTLETT 2,167,413,

SUPPORT SUCH AS CENTERING, SHUTTERING, SCAFFOLDING, AND THE LIKE FiledNov. 27, 1937 Sheets-Shet 3 Patented July 25, 1939 UNITED STATES PATENTOFFICE SUPPORT sUoH AS oENrERnvG, SHUTTER... .ING, SCAFFOLDING, AND THELIKE,

Reginald Frank Bartlett, Weybridge, England Application November 27,1937, Serial No. 176.933

In Great Britain December 2, I936 11 Claims. (Cl. 189 -3'7) V Thisinvention relates to an improved form constructed according to thepref-erred form of of adjustable and collapsible supports, particutheinvention as applied to the construction of a larly adapted for use as atemporary support in hollow tile floor.

the construction of concrete or like plastic floors Fig. '2 is a partsectional end View on the line 5 but'also useful as centering,shuttering and scaf- '22'of'Fig, l drawn to "a larger scale, and 5folding in building operations generally. Fig. 3 is a side elevation ofa portion of the One object of the invention is to provide a beamshowing the locking clips. beam for use as a temporary support inbuilding Figs. 4 and 5 are a plan and side elevation reb constructionswhich may be broken in its length spectively of one end of the beamshowing the 1 and moved substantially perpendicularly from the preferredmethod of hin'ging the supporting lugs. 10

surface it supports when the structure needs no Fig. 6 is "a viewsimilar to Fig. 1 but showing further support. the invention applied toa construction in which Another object is to provide a beam which theform used is an arc of a circle. i does notdepend upon telescoping fordevelopment Fig. '7 shows diagrammatically in section the p 35 of thenecessary reaction to the bending moveuse of the invention for theconstruction of floors ment. with hollow clay tiles or the like, and

Another object is to provide a beam which Fig. 8 is a similar viewshowing a floor con- ;breaks contact with the plastic material ondisstruction in which steel or wooden intermediate assembling by tensionand not by shearing or slidforms are use-d 'for solid slab floorconstruction.

g ing. Fig. 9 shows a method of erection or disman- 0 Another object isto provide a beam which can 'tling of the beam according to theinvention. be erected from the floor below that to be built. 10 is asectional elevation and Another object is to provide an adjustable andFig. 11 is a plan view showing the invention collapsible beam or supportconsisting of inter applied to a further type of floor. fitting membersof open hollow section formed Re e g o Figs- 0 3 the e G D SeS hepreferably from sheet metal and pivotally contwo flanged channel membersIn, ll of sheetmetal nected together by a sliding connection togetherbent into the form shown with the inner or nestwi-th means for lockingthe members together i'ng member 'I l formed with two grooves orchanwhen the support is in the desired position. nels l3 with whichrollers [4 carried on the inside A further object is to provide meansfor lockof the outer member I!) engage V 30 'ing the members of the beamor support together ously t e b c made Withone ve and so that sagging isprevented. one roller and if desired the grooves could be A furtherobject is to provide hinged supporting replaced by slots. The sides andend of the m'em lugs at the ends of the beam or support to her Ii] arecut back or relieved at 15 adjacent to 5 facilitate removal of the beamor support from the rollers to enable the two members to Sw the finishedwork. about the rollers in the manner of a sliding hinge According tothe present invention the supso that the member II] can take up aposition apport or beam comprises at least two interfitting proximatelyat right angles to the member II as or nesting members of open hollowsection formed indicated in Fig. 9, the rollers l4 forming with fromthin sheet metal or other suitable material the grooves l3 a slidinghinge or pivot point as 0 pivotally connected together by a slidingconnecwill be understood. To rest the beam on the work tion, means beingprovided for locking the memas indicated in Fig. 1 each end of the beamis hers-together when the support is in the desired provided with asupporting lug i6 shaped as shown position. The connection is such thatit allows and pivoted at H to the sides of aslot formed in 5 the twomembers to move relatively in the manthe end of the beam, the end of thelatter being ner ofa sliding hinge which facilitates erection relieveda-t l8 to provide clearance for erection and and dismantling ashereinafter described. The 'collapsingand also recessed at l8a tosupport the ends of thebeam are provided with supporting adjacent end ofthe lug l6 when the beam is in lugs as usual but these lugs are-hingedlyattached position in the work. The hinges are preferably to facilitatethe removal of the beam fromthe so arranged that the lugs cannot pivotbeyond a finished work. position substantially level with the top of theTo enable the invention to be fully understood beam. The pivot pin Ilmay be left short in the it will now be described by reference to theachole on either side or alternatively a hole or lug is companyingdrawings, in which: provided as shown at 2 9 and 30 respectively forFig. lis an elevation showing a support or beam the purpose ofsupporting the stirrups carrying 5 the centering of the supporting beamin cases where the floor is suspended from a cross beam made up of arolled steel joist encased in plastic material or the like construction.When the beam has been erected in position as indicated in Fig. 1 thetwo members Ill and ll are locked together by suitable means here shownas clips each con.- sisting of a toggle lever l9 pivoted at 20V to theflange of the member l and engaging one end of a link 2i shaped toembrace the flange of the member 5 l on each side. A lug or eye 22 issecured to the member ill for attachment of a tackle 2.3. and severalsuch lugs may be provided if desired.

A beam constructed as above described may be used in constructing ailoor as follows:

Referring to Fig. 9. The two members It), II having been assembled bynesting the one within the other and engaging the rollers M in thechannels l3 the outer ends of the members are raised to the abutments22a. of the new floor level. and the hinged lugs Eli are held inposition in said abutments. This causes the two members to moverelatively in the manner of a sliding hinge as shown. The tackle 23 isthen applied and the inner end of the member H is raised until the twomembers are in alignment; the toggles l9 are then adjusted to hold thetwo members rigidly together (Fig. 1). The floor is then applied on theupper side of the beam and when it is finished the toggles are unlockedallowing the two members of the beam to be pulled down again into theposition shown in Fig. 9 and finally the hinged lugs i6 are prised clearof the abutments and the beam is removed.

Figs. 10 and 11 show the application of the invention to a floorconstruction wherein the whole of the centering is slung from a crossbeam such as a steel joist 4t embedded in some plastic material placedat the same time as the floor. In this construction an endless stirrup32 of steelbar is placed over the joist ll? and the lugs it of themembers Ni, ii are inserted in the loops of the stirrup 32 as shown andif necessary bound in place by light wire ties passed through holesformed in the lugs. The shuttering 34 of the joist iil is then placed inposition and held in place by a stirrup 35 supported in holes 3i] formedin the members ill, H or if desired the holes 30 may be replaced by lugsover which the stirrup is hooked.

In disassembling the lugs 16 are prised clear shearing the light wireties, if any, the stirrup 32 being left buried in the plastic material.shows the plastic floor i! in position.

Fig. 6 shows the invention applied to a curved beam, the members 10, Hand lugs l6 being as described with reference to Fig. 1 except that themembers Ni, ii are curved and the lugs it do not pivot beyond a positionsubstantially level with the ends of the members l6, ll.

Fig. '7 shows the invention used to support a floor made of hollow clayor precast concrete tiles as with the main beams 25 of plastic materialcast in situ. A series of beams A constructed according to the inventionare indicated diagrammatically.

Fig. 8 shows a series of beams A supporting a floor consisting of asolid slab 26 of plastic material cast in situ, the spaces interveningbetween the means being supported by metal or wood forms 2? supported atthe joint planes by wood or similar chocks 28 suitably spaced andresting on the out-turned flanges at the bottom of the webs of the beamsA. 7

It will be understood that a beam constructed as hereinbefore describedis rendered incapable Fig. 10

of sagging by the use. of the locking clips referred to. The beam doesnot depend upon telescoping for development of the necessary reaction tothe bending moment and in Which the metal is not most economicallydisposed for this purpose and in addition the beam breaks contact withthe plastic material on disassembling by tension and not by shearing orsliding. Further the beam can be erected from the floor below that to bebuilt, which is a great advantage in practice. The improved beam ispreferably formed from two inserted channel members of rectangularcrosssection arranged with bases uppermost and having deep sides without-turned flanged edges but other forms of open hollow section orsections with out-turned or plain edges may be employed. The webs of thechannels can be pierced or latticed for lightness if desired, but thesection should be so shaped that it is symmetrical in reard to avertical central plane so that it is centrally loaded by the weightcoming upon it.

Other forms of sliding pivotal connections may be employed for themembers forming the beam and a beam may consist of more than twomembers. Various means may be designed for locking the members of thebeam together when in the working position, and bolts may be used ifdesired.

Although the improved beam according to the invention is most usefullyapplied to the construction of floors and the like, it may be used forthe supporting of vertical surfaces thus acting as a Walling. In itscurved form the beam may be used in the construction of arches and thelike.

I claim:

1. An adjustable and collapsible support for use as a temporary supportin building operations comprising two interfitting sheet metal membersof open hollow section, a groove in one of said members, a fixed pivoton the other of said members engaging said groove and providing asliding pivotal connection between said members and means for lockingthe said members together when the support is erected in position.

An adjustable and collapsible support for use as a temporary support inbuilding operations comprising interiitting inner and outer channelmembers arranged with their bases uppermost said inner member having agroove in each side, a roller on each side oi the outer member engagingin one of the grooves on the inner member and means for locking the saidmembers together when the support is erected in position.

3. An adjustable and collapsible support for use as a temporary supportin building operations comprising interfitting inner and outer channelmembers arranged with their bases uppermost the inner member having alongitudinal groove in each side, a roller on each side at one end ofthe outer member each roller engaging in one of the rooves on said innermember, the said end of said outer member being relieved adjacent to therollers allowing relative movement between the two members in the mannerof a sliding hinge and locking means for clamping the said memberstogether when the support is erected in position.

4. An adjustable and collapsible support for use as a temporary supportbuilding operations comprising in combination inner and outer sheetmetal channel members, the inner member having a groove therein, a fixedpivot at one end of the outer member engaging and sliding in saidgroove, the said end of said outer member being relieved adjacent tosaid pivot, the end of each member remote from said pivot being. shorteron the bottom side than on the top, a hinged supporting lug pivoted tosaid ends of said members remote from the pivot and means for clampingthe two members together when the support is erected in position.

5. An adjustable and collapsible support for use as a temporary supportin building operations comprising in combination inner and outerinterfitting sheet metal members of open hollow sec tion, said innermember having a groove therein, a fixed pivot at one end of said outermember engaging and sliding in said groove, the end of said outer memberadjacent to the pivot being relieved, the end of each member remote fromsaid pivot having a slot therein, a hinged supporting lug pivoted ineach of said slots, means to prevent said lugs pivoting beyond aposition level with the top of the support, said slotted ends of saidmembers being shorter on the bottom side than the top and means forclamping said members together when said support is erected in position.

6. An adjustable and collapsible support for use as a temporary supportin building operations comprising in combination inner and outerinterfitting sheet metal members of open hollow section, said innermember having a groove therein, a fixed pivot at one end of said outermember engaging and sliding in said groove, the end of said outer memberadjacent to the pivot being relieved, the end of each member remote fromsaid pivot having a slot therein, a hinged supporting lug pivoted ineach of said slots, means to prevent said lugs pivoting beyond aposition level with the topof the support, said slotted ends of saidmembers being shorter on the bottom side than the top, outturned flangesformed on the open sides of said members, links embracing said flangesand toggle levers pivoted to said flanges and engaging said links toclamp said members together when the support is erected in position.

'7. An adjustable and collapsible structure for use in buildingoperations comprising in combination a joist, supported in its length, astirrup placed over said joist and having loops therein at each side,two adjustable and collapsible supports each comprising two interfittingsheet metal members of open hollow section, one of said members having agroove therein, a pivot on the other of said members engaging andsliding in said groove and hinged members at the ends of said membersremote from said pivot, said hinge members being inserted in the loopsin said stirrups, the said ends of said members remote from said pivotshaving holes therein, a stirrup underlying said joist and havingportions thereon engaging said holes and means for locking each of saidsupports when erected in position.

8. An adjustable and collapsible support for use as a temporary supportin building operations comprising two interfitting members of openhollow section, a sliding connection pivotally connecting said twomembers together so that relative movement can take place between thetwo members in two planes, and means for locking the members togetherwhen the support is erected in position.

9. An adjustable and collapsible support for use as a temporary supportin building operations comprising a plurality of interfitting members ofopen hollow section, sliding connections pivotally connecting each pairof said members together, and means for locking the members togetherwhen the support is erected in position.

10. An adjustable and collapsible support for use as a temporary supportin building operations comprising two interfitting members, and meansincluding a pivot whereby the members may have telescopic movement and aswinging motion about the pivot.

11. An adjustable and collapsible support for use as a temporary supportin building operations comprising two interfitting members, meansincluding a pivot whereby the members may have telescopic movement and aswinging motion about the pivot, and means engaging both members for.locking the members together when the support is in operative position.

REGINALD FRANK BAR'ILETI.

